||Some ACS SBC THCOMPNAME values were incorrectly specified in the last delivery of the Pysynphot TMG graph file. This new version will allow Pysynphot to generate the proper exceptions, which will be caught by the ETC code.
||New STIS time dependent sensitivity, TDS, trends derived from on orbit observations taken between April 1997 and July 2019.
Recent observations taken for TDS monitoring have begun to diverge from the extrapolated trends in the existing references files, particularly in the NUV.
These files are for correcting the TDS in data taken post SM4, after May 1, 2009. However, in these new reference files the post SM4 TDS fits are now explicitly
anchored to the pre SM4 TDS fits.
||New WFC3 UVIS bad pixel tables that include flags value 8 for pixel instability, as described by WFC3 ISR 2018.15
||These WFC3 UVIS superdarks, drk, and CTE corrected superdarks, dkc, will affect all UVIS data taken from September 4th through September 30th 2019. Currently, the automated calibration pipeline and Calibration Reference Data System only have WFC3 UVIS drk and dkc reference files up to a USEAFTER date of August 29th 2019. The automated pipeline should now use these reference files to perform dark subtraction on any UVIS datasets obtained between the dates above because they represent the most accurate estimate of the dark current and hot pixels at the time of the science observation. These WFC3 UVIS drk and dkc files were generated using dark exposures from the HST Cycle 26 daily monitoring program 15571. More information regarding the method used to create UVIS dark calibration reference files can be found in WFC3 ISR 2016 08. Additionally, the header of each reference file has a detailed history section outlining the process and provides a list of datasets used to create each file.